package com.sistema.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.sistema.vendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter{
	
	private SessionFactory sessionFactory;

	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
			FilterChain filterChain) throws IOException, ServletException {
		
		try {
			this.sessionFactory.getCurrentSession().beginTransaction();
			filterChain.doFilter(servletRequest, servletResponse);
			this.sessionFactory.getCurrentSession().getTransaction().commit();
			this.sessionFactory.getCurrentSession().close();
			
		} catch (Throwable ex) {
			try {
				if(this.sessionFactory.getCurrentSession().getTransaction().isActive()){
					this.sessionFactory.getCurrentSession().getTransaction().rollback();
				}
				
			} catch (Throwable pThrowable) {
				pThrowable.printStackTrace();
			}
			
			throw new ServletException();
		}
		

	}

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		this.sessionFactory = HibernateUtil.getSession();
	}
	
	

}
